diff --git a/internal/controller/well_known_controller.go b/internal/controller/well_known_controller.go
index a00876be..8c71d890 100644
--- a/internal/controller/well_known_controller.go
+++ b/internal/controller/well_known_controller.go
@@ -44,7 +44,7 @@ func NewWellKnownController(oidc *service.OIDCService, router *gin.RouterGroup)
 func (controller *WellKnownController) OpenIDConnectConfiguration(c *gin.Context) {
 	if controller.oidc == nil {
 		c.JSON(500, gin.H{
-			"status":  "500",
+			"status":  500,
 			"message": "OIDC service not configured",
 		})
 		return
@@ -73,7 +73,7 @@ func (controller *WellKnownController) OpenIDConnectConfiguration(c *gin.Context
 func (controller *WellKnownController) JWKS(c *gin.Context) {
 	if controller.oidc == nil {
 		c.JSON(500, gin.H{
-			"status":  "500",
+			"status":  500,
 			"message": "OIDC service not configured",
 		})
 		return
@@ -83,7 +83,7 @@ func (controller *WellKnownController) JWKS(c *gin.Context) {
 
 	if err != nil {
 		c.JSON(500, gin.H{
-			"status":  "500",
+			"status":  500,
 			"message": "failed to get JWK",
 		})
 		return
diff --git a/internal/service/oidc_service.go b/internal/service/oidc_service.go
index 02c33199..6b46ed9b 100644
--- a/internal/service/oidc_service.go
+++ b/internal/service/oidc_service.go
@@ -230,11 +230,10 @@ func NewOIDCService(
 				return nil, fmt.Errorf("failed to parse public key: %w", err)
 			}
 		case "PUBLIC KEY":
-			publicKey, err := x509.ParsePKIXPublicKey(block.Bytes)
+			publicKey, err = x509.ParsePKIXPublicKey(block.Bytes)
 			if err != nil {
 				return nil, fmt.Errorf("failed to parse public key: %w", err)
 			}
-			publicKey = publicKey.(crypto.PublicKey)
 		default:
 			return nil, fmt.Errorf("unsupported public key type: %s", block.Type)
 		}